Refrigerating apparatus



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June I 30, 1931 1 v UNITED P T NT OFFICE- worse. nonfatal, ass1enon r0 ANEEUSEB-BUSGE-INQ, or BIl'QIf-DOUIS, mssouar, aconrom'rron or mssomu l mmenaa'rme minim i flame September 18, 1929. s.aa1' no. 392,259.

This inventionrelates generall to'refrigerating apparatus, and more speci cally to refrigerating apparatus 1 adapted for use with pioltild carbon dioxide (CO or other. solidi dominant object of the invention being togprosduce a refrigerating apparatus of this 'ty which is so constructed and arranged that t ev maximum refrigerating efliciency of the refri erant is obtained.

t is generall known that solid carbon dioxide at atmosp eric conditions attains a temperature of approximately 110 degrees below zero. Fahrenheit, and it 1s likewise common knowledge that said substance is dissipated by sublimation, during which sublimation a gas is given of! thereby.v This gas at the moment it leaves the solid carbon dioxide is approximatelythe' same temperature as the body of employed prior to this invention in the util1- frigerating apparatus constructed in accord solid carbon dioxide, and,hence the gas possemes high refrigeratin value.

In the use of some re geratmg apparatus zation of solid carbon dioxide as a refrigerant, the refrigerating value of the gas given oif by the refrigerant was partially or entirely lost, and the primary object of this invention is to utilize the refrigerating value of this gas until all of said refrigeratinfig value has been dis sipated, whereby the e ciency of the refrigerating apparatus will be increased.

Flg. 1' 's a vert'cal section through a reance with this invention.

Fig. 2 is a horizontal section taken on line 2-2 of Fig. 1. I

In the drawings, wherein is shown for the purpose of illustration, merely, one embodiment .of the invention, A designates my improved refrigerating apparatus, which com.- prises-a housm 1' prov1 ed with suitable insulated walls 0 the type common to refrigerators,

said walls being lined with cork, kapok, or other suitable porous material. The housing 1 is provided with an opening 2 with "which is mociated a suitable closure element 3, said ope refrigerated compartment 4 within thehous- 10 d i upported 1n any smtable manner within v g 2' providing for access to the gas, as the refrigerant thereof, the pr.e"

*ceptacle 5 constitutes a refrigerant receiving compartment 6, the bottom and side walls of said compartment being provided by the botthe refrigerated compartment 4, preferably in i I the upper portion thereof, is a refrigerantrece taole 5, said receptacle comprising a contamer formed'of sheet metal or other suitable material. The greater portion of the renot extend entirely to the bottom wall of the .receptacle 5, the lower edge of said partition or. bafile plate being spaced apart in a vertical direction from said bottom wall of the receptacle to provide a passageway 9. The refrlgerant receiving compartment v6 is provided with atop wall 10 through which an opening 11 is formed, said opening 11 being arranged in coincidence with an opening 12 formed in the top Wall of the housin 1, and

the last mentioned opening is closed y-a removable closure element 13.

Atthe side of the partition or bafile plate 8 opposite to the side-thereof at which the refrigerant receiving compartment 6 is located, the receptacle 5 is provided with a compartment 14: with which the refrigerant receiving compartment-6 communicates through-the instrumentality of the passageway 9. Extended transversely of the compartment 14 is a nestof tubular elements 15 providing flues, said tubular elements being secured at their opposite ends to the opposite side walls of the compartment 14, and the opposite ends of said tubular elements being open so that air within the refrigerated compartment 4, with which said-tubular elements communicate, may pass therethrough.

Leading from the compartment 14 is a gas conductor 16 communicating with the interior of the compartment 14, preferably at the top portion thereof. The conductor 16 preferabl 7 extends through a wall of the refrigerate compartment 4 and serves to discharge gas from the -.com-partment 14 to atmos here.

In e use of my improved refrigerating apparatus the closure element 13 will be reafter which the closure element will be replaced so that it will close said gpenings. he refrigerant, when same is soli carbon dioxide, will be a proximately 110 de rees below zero, Fahren eit, and as a result t ereof the temperature of the refrigerated compartment 4 will be very much reduced. During the reduction of the temperature of the re rigerated compartment 4 the refrigerant R will sublimate, and a gas will be given off thereby which is heavier than air, and this gas will move downwardly within the compartment 6 and will pass through thepassageway 9 into the compartment 14;," said gas passing between and around the tubular elements 15 and being discharged from the compartment 14 through the conductors 16 and 17, as indicated by the arrows in Fig. 1.

When the gas referred to leaves the refrigerant B it is approximately the same temperature as said refrigerant, hence said gas possesses substantial refrigerating value,

and by passing said gas through the com-' partment 6 in contact with the tubular ele-v ments 15 the tem erature of the tubular elements will be re uced to and maintained at a temperature which ap roximates the temperature of the gas. T e tubular elements 15 are located at the top of the refrigerated compartment 4, at which point the warmer air of the circulating air within said refrigerated compartment is/i'o'cated, and some of this Warmer air will pass longitudinally through the tubular elements 15, whereb the temperature of such air will be reduce It is my belief that this passage of air through the tubular elements 15 results from the fact that the downward movement of air which has been chilled by the receptacle 5 creates suction at the ends of the tubular elements which draws air through said tubular ele ments. In this mannerthere is a continued circulation of air within the refrigerated compartment 1 through the very cold tubular elements 15, and as a result thereof the temperature within said refrigerated comis not released until substantially all of the refrigerating value thereof has been,

pated, whereby of refrigerating value 1n the gas is avoided.

I claim:

1. A refrigerating apparatus comprising a housing providing arefrigerated compartment, a refrigerant'chamber within said refrigerated compartment arranged to receive a refrigerant of thesolidified gas type which gfives ofl gas on sublimation, a gas chamber sposed adjacent to said refrigerant chamber and likewise located within said refrigerated compartment, said gas chamber being in communication with "said refrigerant chamber whereby gas resulting from sublimation of the refrigerant may pass from .the refrigerant chamberinto the gas chamber, means for discharging as. from said gas chamber, a conduit exten ed through said gas chamber and disposed in the path of gas moving therethrough, said conduit bein arranged in communication with said re rigerated compartment so as to provide a passageway for air within said refrigerated compartment.

2. A refrigerating apparatus comprising a housing providing a refrigerated compartment, a refrigerant chamber within said refrigerated compartment arranged to receive arefrigerant of the solidified gas type which gives off gas on sublimation, a gas chamber disposed adjacent to said refrigerant chamber and likewise located within said refrigerated compartment, said gas chamber being in communication with said refrigerant chamber whereby gas resulting from sublimation of the refrigerant may pass from the refrigerant chamber into the gas chamber, means for discharging gas from said gas chamber, a plurality of conduits extended through said gas chamber and disposed in the path of travel of gas moving therethrough so that said gas will pass between and around said conduits, said conduits being arranged in communication with said refrigerated compartment so as to provide passagewaysfor air within said refrigerated compartment.

3. A refrigeratingapparatus comprisinga housing providing a refrigerated compartment, a refrigerant chamber within said refrigerated compartment arranged to receive I a refrigerant of the solidified gas type which gives off gas on sublimation, a gas chamber disposed adjacent 'to said said refrigerant chamber and likewise located within said refrigerated compartment, said gas chamber bein in communication with said refrigerant c amber whereby gas resulting from sublimation of the refrigerant may pass from the refrigerant chamber into the gas chamber, a baffle for causing'gas from the refrigerant chamber to' pass into the gas cham-, ber at a predetermined point thereof, means I for discharging gas'from said gas chamber,"

a conduit extended through said gas chamran in comunication with said refrigerate compartment so as to provide a passage- 5 way for air within said refrigerated compartment.- I 4. A refrigerating apparatus comprising a housing providing a refrigerated compartment, a refrigerant chamber within said refrigerated compartment arranged to receive a refrigerant of the solidified gas type which gives off gas on sublimation, a gas chamber disposed adjacent to said refrigerant chamber and likewise located within said refrig- 15 erated compartment, sa'd gas chamber being in communication with said refrigerant chamber whereby gas resnlting'from sub-' limation of the refrigerant may pass from the refrigerant chamber into the as chamber,'a 2 baflle for causing gas from t e refrigerant chamberto pass into. the gas chamber at a predetermined point thereof, means for discharglng gas from said gas chamber, a nest of-conduits extended through said gas cham- 25 ber and disposed in the path of travel of gas moving therethrough so that said gas will pass between and around said conduits, said conduits being arranged in communication with said refrigerated compartment so as to rovide passageways for air within said rerigerated compartment.

y 5. A refrigerating apparatus comprising a housing providing a refrigerated. compart-- -ment,' a refrigerant chamber within said re- 35 frigerated compartment arranged to receive a'refrigerant of the solidified gas type which givesofl? gas on sublimation, a gas chamber sposed adjacent to said. refrigerant chamber and likewise located within said refrig- 4n erated compartment, sa'd gas chamber being in communication with said refrigerant chamber wherebyigqas resulting from sublimation of the re 'gerant may pass from the refrigerant chamber into the gas cham- 5 ber, means for discharging gas from said chamber comprising a conductor exten ed into a wall of said housing, a conduit extended through said gas-chamber and disposed in the path of travel of gas moving so therethrough, said conduit being arranged in communication with said refrigerated compartment so as to rovide a passageway for airwithin said re rigerated compartment. In testimony that I claim the foregoing I sa'herennto aflix mfi si ature. I F E ERICK W. BABE 

